Struct Fields

pub struct Fields<T> {
    pub style: Style,
    pub fields: Vec<T>,
    /* private fields */
}

Equivalent to syn::Fields, but replaces the AST element with a generic.

Fields

style: Style

fields: Vec<T>

Implementations

impl<T> Fields<T>

pub fn new(style: Style, fields: Vec<T>) -> Self

Creates a new Fields struct.

pub fn with_span(self, span: Span) -> Self

Adds a Span to Fields.

pub fn empty_from(vd: &Fields) -> Self

pub fn split(self) -> (Style, Vec<T>)

Splits the Fields into its style and fields for further processing. Returns an empty Vec for Unit data.

pub fn is_newtype(&self) -> bool

Returns true if this variant’s data makes it a newtype.

pub fn is_unit(&self) -> bool

pub fn is_tuple(&self) -> bool

pub fn is_struct(&self) -> bool

pub fn as_ref(&self) -> Fields<&T>

pub fn map<F, U>(self, map: F) -> Fields<U>

where F: FnMut(T) -> U,

pub fn iter(&self) -> Iter<'_, T>

pub fn len(&self) -> usize

Returns the number of fields in the structure.

pub fn is_empty(&self) -> bool

Returns true if the Fields contains no fields.

impl<F: FromField> Fields<F>

pub fn try_from(fields: &Fields) -> Result<Self>

Trait Implementations

impl<T> AsShape for Fields<T>

fn as_shape(&self) -> Shape

Get the “shape” of a fields container.

impl<T: Clone> Clone for Fields<T>

fn clone(&self) -> Fields<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for Fields<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T, U: Into<Vec<T>>> From<(Style, U)> for Fields<T>

fn from((style, fields): (Style, U)) -> Self

Converts to this type from the input type.

impl<T> From<Style> for Fields<T>

fn from(style: Style) -> Self

Converts to this type from the input type.

impl<T> IntoIterator for Fields<T>

type Item = T

The type of the elements being iterated over.

type IntoIter = IntoIter<T>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<T: PartialEq> PartialEq for Fields<T>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: ToTokens> ToTokens for Fields<T>

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.

impl<T: UsesLifetimes> UsesLifetimes for Fields<T>

fn uses_lifetimes<'a>( &self, options: &Options, lifetimes: &'a LifetimeSet, ) -> LifetimeRefSet<'a>

Returns the subset of the queried lifetimes that are used by the implementing syntax element.

fn uses_lifetimes_cloned( &self, options: &Options, lifetimes: &LifetimeSet, ) -> LifetimeSet

Find all used lifetimes, then clone them and return that set.

impl<T: UsesTypeParams> UsesTypeParams for Fields<T>

fn uses_type_params<'a>( &self, options: &Options, type_set: &'a IdentSet, ) -> IdentRefSet<'a>

Returns the subset of the queried type parameters that are used by the implementing syntax element.

fn uses_type_params_cloned( &self, options: &Options, type_set: &IdentSet, ) -> IdentSet

Find all type params using uses_type_params, then clone the found values and return the set.

impl<T: Eq> Eq for Fields<T>